diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..243c58c
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,10 @@
+{
+    "files.associations": {
+        "*.rst": "restructuredtext",
+        "*.make": "makefile",
+        "opam": "ocaml.opam",
+        "schema.capnp.h": "c",
+        "stdbool.h": "c"
+    },
+    "cmake.configureOnOpen": false
+}
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ecd2f5d..59ec1f9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,6 +9,13 @@ project(c-capnproto LANGUAGES ${languages})
 
 include(CTest)
 
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_C_EXTENSIONS NO)
+if(BUILD_TESTING)
+    set(CMAKE_CXX_STANDARD 20)
+    set(CMAKE_CXX_EXTENSIONS NO)
+endif()
+
 # Stop noise if CXX compiler is set.
 set(ignoreAndAvoidCMakeUnusedWarning "${CMAKE_CXX_COMPILER}")
 
diff --git a/tests/example-test.cpp b/tests/example-test.cpp
index 80e3922..9510685 100644
--- a/tests/example-test.cpp
+++ b/tests/example-test.cpp
@@ -18,7 +18,7 @@
 #include "addressbook.capnp.h"
 
 static capn_text chars_to_text(const char *chars) {
-  return (capn_text) {
+  return {
     .len = (int) strlen(chars),
     .str = chars,
     .seg = NULL,